:root{font-family:Hiragino Kaku Gothic ProN,Yu Gothic,Meiryo,sans-serif;color:#243c4d;background:#fafbfd;font-synthesis:none;line-height:1.8;font-size:16px}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-underline-offset:5px}button{font:inherit;cursor:pointer}button,a{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible{outline:3px solid #b56a08;outline-offset:5px}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:#173950}h1{font-size:clamp(2rem,3.5vw,3.1rem);line-height:1.6;letter-spacing:.025em}h2{font-size:1.6rem;line-height:1.6}h3{font-size:1.1rem;line-height:1.8}p{margin-bottom:1.1rem}a:hover{color:#1f668e}.skip{position:fixed;left:16px;top:-90px;background:#fff;padding:12px;z-index:5}.skip:focus{top:12px}.site-header{max-width:1200px;margin:auto;padding:28px 40px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid #dbe3e9}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-size:1.2rem;font-weight:800;letter-spacing:.04em}.brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:11px;background:#173950;color:#fff;font-size:1.25rem;font-family:Georgia,serif;line-height:1}.site-header nav{display:flex;gap:30px;font-size:.9rem}.site-header nav a{text-decoration:none}.site-header a[aria-current]{border-bottom:2px solid #173950}main{max-width:1120px;margin:auto;padding:0 0 80px}.intro{display:grid;grid-template-columns:1.2fr 1fr;gap:64px;align-items:center;padding:62px 0 58px}.eyebrow{font-size:.78rem;letter-spacing:.1em;font-weight:700;color:#46657a;margin-bottom:14px}.intro h1{margin-bottom:19px}.lead{font-size:1.04rem;max-width:620px;line-height:2}.actions{display:flex;gap:24px;align-items:center;flex-wrap:wrap;margin:26px 0 16px}.button{display:inline-flex;justify-content:center;align-items:center;text-decoration:none;background:#173f5d;color:#fff;padding:13px 22px;border-radius:7px;min-height:50px;font-weight:700;font-size:.94rem;border:1px solid #173f5d}.button:hover{background:#245d83;color:#fff}.button.secondary{background:#fff;color:#173f5d;border-color:#a9bdca}.text-link{font-weight:700;font-size:.9rem}.small-note{color:#587080;font-size:.86rem}.first-lesson{border-radius:12px;padding:28px 30px;background:#e9f1f7;border:1px solid #d2e1ec;box-shadow:10px 10px #f1c64e}.feature-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px}.feature-top .eyebrow{margin:0}.small-tag{font-size:.76rem;border:1px solid #b5c9d7;border-radius:30px;padding:3px 12px}.first-lesson h2{font-size:1.45rem}.first-lesson>p{font-size:.92rem}.sample-snippet{background:#fff;border-radius:7px;padding:19px 22px;margin:20px 0}.sample-snippet p{font-size:.95rem;margin:5px 0 0;line-height:1.95}.sample-snippet .eyebrow{font-size:.75rem}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:26px}.section-heading h2{margin:0}.section-heading .eyebrow{margin-bottom:5px}.section-heading>p{font-size:.9rem;margin-bottom:4px;color:#5c7180}.lesson-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.lesson-card{display:flex;flex-direction:column;position:relative;text-decoration:none;background:#fff;border:1px solid #dce4eb;border-radius:10px;padding:23px 24px 20px;transition:box-shadow .15s,border-color .15s}.lesson-card:hover{border-color:#7b9db5;box-shadow:0 6px 20px #1739500c;color:inherit}.lesson-no{font-size:1.6rem;color:#365c78;font-family:Georgia,serif;line-height:1.2;margin-bottom:22px}.lesson-card .eyebrow{font-size:.78rem;letter-spacing:.03em;color:#65798a}.lesson-card h3{margin:5px 0 12px}.lesson-card p{font-size:.89rem;line-height:1.8;color:#526b7b}.card-read{margin-top:auto;padding-top:16px;border-top:1px solid #e9edf1;font-size:.88rem;font-weight:700}.reading-note{display:flex;gap:32px;margin-top:48px;border-top:1px solid #dce4eb;padding-top:35px}.note-number{font-family:Georgia,serif;color:#436884;white-space:nowrap;font-size:1.25rem}.reading-note h2{font-size:1.15rem;margin-bottom:10px}.reading-note p{font-size:.93rem;max-width:800px;margin:0}.page-title{padding:55px 0 30px}.page-title h1{font-size:2.3rem;margin-bottom:15px}.list-grid{grid-template-columns:repeat(2,1fr)}.list-grid .lesson-card{padding:28px}.site-footer{max-width:1200px;margin:auto;padding:35px 40px;border-top:1px solid #dce4eb;display:grid;grid-template-columns:1fr auto;gap:18px 30px;color:#566f7f;font-size:.85rem}.footer-brand{text-decoration:none;font-weight:700;font-size:1rem;color:#173950}.site-footer p{margin:7px 0 0}.site-footer nav{display:flex;flex-wrap:wrap;gap:25px;align-items:start}.copyright{grid-column:1/-1;font-size:.75rem;color:#4d697c}.lesson-layout{display:grid;grid-template-columns:215px minmax(0,1fr);gap:65px;padding-top:35px}.lesson-sidebar{padding-top:15px}.lesson-sidebar ol{list-style:none;padding:18px 0;margin:0;position:sticky;top:24px}.lesson-sidebar li a{display:flex;gap:12px;text-decoration:none;font-size:.89rem;padding:12px 10px;border-radius:6px}.lesson-sidebar li a span{color:#4d697c;font-family:Georgia,serif}.lesson-sidebar [aria-current]{background:#e5eff6;color:#163e5d;font-weight:700}.lesson-article{max-width:770px}.breadcrumb{font-size:.8rem;color:#627e91;margin-bottom:30px}.lesson-title h1{font-size:2.35rem;line-height:1.55;margin-bottom:15px}.lesson-summary{font-size:1.05rem;color:#576f80}.lesson-title{padding-bottom:24px;border-bottom:1px solid #dce4eb}.lesson-section{margin-top:40px}.lesson-section h2{font-size:1.35rem;margin-bottom:20px;padding-left:15px;border-left:3px solid #426f8f}.lesson-section.goal{background:#edf3f8;padding:26px 28px;border-radius:8px}.lesson-section.goal h2{font-size:1rem;border:0;padding:0;margin-bottom:12px}.prose p{line-height:2.05}.prose ul{padding-left:1.4em;line-height:2.1}.prose a{overflow-wrap:anywhere;color:#285f83}.prompt{border:1px solid #a6bdcd;border-radius:9px;background:#fff;margin:16px 0 22px;overflow:hidden}.prompt-head{padding:14px 20px;background:#edf3f7;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:.8rem;color:#345b77;font-weight:700}.prompt button{background:#fff;border:1px solid #8faabd;color:#204866;border-radius:5px;padding:9px 12px;font-size:.8rem;min-height:44px}.prompt blockquote{padding:22px 24px 12px;margin:0;line-height:2.05;white-space:pre-wrap}.copy-status{margin:0;padding:0 24px 16px;font-size:.8rem;color:#47687e;min-height:16px}.external-note{background:#f0f4f7;padding:22px 25px;margin-top:36px;border-radius:8px;font-size:.9rem}.external-note p{margin-bottom:10px}.lesson-navigation{display:flex;justify-content:space-between;align-items:center;gap:16px;border-top:1px solid #dce4eb;margin-top:40px;padding-top:26px}.info-page{max-width:760px;margin:auto;padding-top:60px;min-height:60vh}.info-page h1{font-size:2.3rem;margin-bottom:35px}.info-page h2{font-size:1.3rem;margin-top:32px}.info-page p{line-height:2.05}.info-page .button{margin-top:20px}@media(min-width:1500px){main{max-width:1160px}.intro{gap:85px}}@media(max-width:1199px){main{padding-left:32px;padding-right:32px}.intro{gap:38px}.lesson-layout{gap:36px;grid-template-columns:190px minmax(0,1fr)}}@media(max-width:850px){.intro{gap:30px}.intro h1{font-size:2rem}.intro .actions{gap:14px}.lesson-grid{grid-template-columns:repeat(2,1fr)}.first-lesson{padding:22px}.section-heading{align-items:start;flex-direction:column;gap:8px}.lesson-layout{display:block}.lesson-sidebar{display:none}.lesson-article{margin:auto}.site-footer{grid-template-columns:1fr}.site-footer nav{gap:18px}.copyright{grid-column:auto}}@media(max-width:620px){.site-header{padding:20px;align-items:start;gap:14px;flex-direction:column}.brand{font-size:1.1rem}.site-header nav{gap:24px;font-size:.83rem}.site-header nav a{padding:5px 0}.brand-mark{width:32px;height:32px}main{padding:0 20px 55px}.intro{display:block;padding:36px 0 42px}.intro h1{font-size:1.85rem}.lead{font-size:1rem}.intro .actions{gap:18px}.intro .small-note{margin:18px 0 30px}.first-lesson{padding:24px;margin-right:7px;box-shadow:7px 7px #f1c64e}.first-lesson h2{font-size:1.25rem}.feature-top{flex-wrap:wrap}.lesson-grid{grid-template-columns:1fr;gap:14px}.lesson-card{padding:22px;display:grid;grid-template-columns:34px minmax(0,1fr);gap:0 16px}.lesson-no{margin-top:3px;font-size:1.35rem}.lesson-card h3{font-size:1.04rem}.lesson-card p{margin-bottom:14px}.card-read{grid-column:2;padding-top:10px}.reading-note{gap:16px;margin-top:34px;padding-top:25px;flex-direction:column}.note-number{font-size:1.1rem}.reading-note p{font-size:.9rem}.section-heading h2{font-size:1.45rem}.page-title{padding-top:36px}.page-title h1{font-size:1.8rem}.lesson-title h1,.info-page h1{font-size:1.85rem}.lesson-layout{padding-top:25px}.breadcrumb{margin-bottom:25px}.lesson-section{margin-top:32px}.lesson-section.goal{padding:22px}.lesson-section h2{font-size:1.2rem}.prompt-head{flex-wrap:wrap;padding:13px 17px}.prompt blockquote{padding:18px;line-height:2}.copy-status{padding-left:18px;padding-right:18px}.lesson-navigation{flex-wrap:wrap}.lesson-navigation .button{font-size:.86rem;padding:12px 16px}.site-footer{padding:28px 20px}.site-footer nav{flex-direction:column;gap:10px}.info-page{padding-top:36px}.info-page h1{margin-bottom:25px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}.advanced-heading{margin-top:48px}.group-title{font-size:1.35rem;margin-bottom:22px}.dictionary-link{display:flex;justify-content:space-between;align-items:center;gap:20px;border:1px solid #b4cad9;background:#edf3f8;border-radius:9px;padding:22px 26px;margin-top:24px;text-decoration:none}.dictionary-link span{font-size:.88rem;color:#4d697c}.sidebar-group{font-size:.78rem;letter-spacing:.06em;margin:24px 10px 4px;color:#627d8e}.lesson-sidebar ol{position:static;padding:0 0 12px}.site-header nav{flex-wrap:wrap}@media(max-width:620px){.dictionary-link{align-items:start;flex-direction:column;gap:7px;padding:20px}.site-header nav{gap:12px 20px}.advanced-heading{margin-top:36px}}.catalog-intro{padding:48px 0 35px;display:grid;grid-template-columns:1.2fr 1fr;column-gap:60px;align-items:center}.catalog-intro .eyebrow{grid-column:1/-1;margin-bottom:12px}.catalog-intro h1{font-size:2.5rem;line-height:1.6;margin:0}.catalog-intro .lead{max-width:430px;margin:0;line-height:2.1;color:#4d677b}.service-directory{border-top:1px solid #ccdce7;padding-top:28px}.service-heading{display:flex;align-items:center;justify-content:space-between;gap:30px;margin-bottom:36px}.service-identity{display:flex;align-items:center;gap:16px}.service-monogram{background:#173e59;color:#fff;width:62px;height:62px;display:grid;place-items:center;border-radius:17px;font:1.8rem Georgia,serif}.service-identity h2{font-size:1.8rem;margin:0}.service-identity .eyebrow{margin:0;font-size:.73rem}.service-description{max-width:560px;font-size:.94rem;color:#516b7d;margin:0}.catalog-section-heading{display:flex;justify-content:space-between;align-items:baseline;gap:20px;margin:0 0 20px}.catalog-section-heading h2{font-size:1.25rem;margin:0}.catalog-section-heading p{margin:0}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature-card{display:flex;flex-direction:column;border:1px solid #d7e2e9;border-radius:11px;background:#fff;padding:24px;text-decoration:none;transition:border-color .16s,box-shadow .16s}.feature-card:hover{border-color:#537e9d;box-shadow:0 5px 20px #173f5d12;color:inherit}.feature-card-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:21px}.feature-symbol{font:1.05rem Georgia,serif;background:#eaf2f7;color:#28516c;border-radius:8px;display:grid;place-items:center;width:40px;height:40px}.feature-category{font-size:.75rem;color:#486a81;border:1px solid #cedce6;padding:2px 9px;border-radius:30px}.feature-card h3{font-size:1.3rem;margin:0 0 12px}.feature-summary{font-size:.96rem;line-height:1.9;margin-bottom:12px}.feature-usecase{font-size:.86rem;color:#5f7687;line-height:1.8;margin-bottom:22px}.feature-read{border-top:1px solid #e3ebf1;padding-top:14px;margin-top:auto;font-size:.8rem;font-weight:700;color:#254e6b}.catalog-learning{margin-top:40px;padding:28px 30px;border-left:4px solid #e4bd47;background:#edf3f7;display:flex;justify-content:space-between;align-items:center;gap:36px}.catalog-learning h2{font-size:1.3rem;margin-bottom:10px}.catalog-learning p{font-size:.9rem;max-width:720px;margin-bottom:0}.catalog-learning .eyebrow{font-size:.73rem;margin-bottom:8px}.catalog-learning .button{flex-shrink:0}.catalog-footnote{font-size:.8rem;color:#4d697c;margin-top:25px}.feature-detail-layout{display:grid;grid-template-columns:215px minmax(0,1fr);gap:64px;padding-top:40px}.feature-index nav{display:flex;flex-direction:column;margin:18px 0 24px}.feature-index nav a{font-size:.85rem;text-decoration:none;border-radius:5px;padding:8px 12px}.feature-index nav a[aria-current]{background:#e5eff6;font-weight:700;color:#173e59}.feature-detail{max-width:770px}.feature-detail h1{font-size:2.6rem;margin-bottom:12px}.feature-detail-heading{border-bottom:1px solid #d3e0e9;padding-bottom:22px}.feature-detail-heading .lead{margin-bottom:0}.feature-section{margin:32px 0}.feature-section h2,.feature-sources h2{font-size:1.3rem;margin-bottom:15px}.feature-section ul{padding-left:1.4em;line-height:2}.feature-section li{margin-bottom:10px}.capability-list{list-style:none;padding:0!important}.capability-list li{padding:14px 20px;background:#fff;border:1px solid #dbe5ec;border-radius:7px;margin-bottom:10px}.usecase-panel{padding:24px 27px;background:#eaf2f8;border-radius:9px;margin:30px 0}.usecase-panel>p:not(.eyebrow){font-size:1.05rem;font-weight:700;margin-bottom:12px}.usecase-panel ul{margin:0;padding-left:1.3em;font-size:.92rem}.availability-panel{border-left:3px solid #d9b244;padding:4px 0 4px 22px}.feature-sources{border-top:1px solid #dbe5ec;padding-top:26px;margin-top:35px}.feature-sources ul{padding-left:1.3em;font-size:.9rem;line-height:2.2}.feature-sources a{overflow-wrap:anywhere}.feature-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:28px}@media(max-width:1000px){.feature-grid{grid-template-columns:repeat(2,1fr)}.catalog-intro{column-gap:30px}.catalog-intro h1{font-size:2.1rem}.feature-detail-layout{grid-template-columns:185px minmax(0,1fr);gap:30px}}@media(max-width:750px){.catalog-intro{display:block}.catalog-intro h1{font-size:2rem;margin-bottom:18px}.catalog-intro .lead{max-width:none}.service-heading{align-items:start;flex-direction:column;gap:18px}.catalog-section-heading{display:block}.catalog-section-heading p{margin-top:7px}.feature-detail-layout{display:block}.feature-index{display:none}.feature-detail h1{font-size:2.1rem}.catalog-learning{align-items:start;flex-direction:column;gap:22px}}@media(max-width:540px){.catalog-intro{padding-top:30px}.catalog-intro h1{font-size:1.8rem}.feature-grid{grid-template-columns:1fr}.feature-card{padding:22px}.feature-card-top{margin-bottom:15px}.feature-summary{font-size:1rem}.service-identity h2{font-size:1.6rem}.service-monogram{width:52px;height:52px}.catalog-learning{padding:24px}.feature-detail-layout{padding-top:25px}.feature-detail h1{font-size:1.9rem}.usecase-panel{padding:22px}.feature-bottom{align-items:start;flex-direction:column}}.service-name-link{text-decoration:none}.service-name-link:hover{text-decoration:underline}.learning-start{padding:46px 0 28px}.learning-start h1{font-size:2.5rem;line-height:1.6;margin:0 0 18px}.learning-start>.lead{max-width:740px}.learning-start .actions{margin:24px 0 32px}.learning-path{padding:24px;background:#edf3f7;border-radius:12px;margin:24px 0 16px}.learning-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.learning-step{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid #d7e2e9;border-radius:8px;padding:15px;text-decoration:none}.learning-step:hover{border-color:#537e9d}.learning-step .lesson-no{font-size:1.1rem}.learning-step strong{font-size:.94rem}@media(max-width:750px){.learning-start h1{font-size:2rem}.learning-steps{grid-template-columns:repeat(2,1fr)}.brand{font-size:1rem}}@media(max-width:540px){.learning-start{padding-top:28px}.learning-start h1{font-size:1.8rem}.learning-path{padding:18px}.learning-steps{grid-template-columns:1fr}}